Recent content by lindzpooh

i know mass is E0=Mc2 acceleration= change in speed/time interval

not even close!

work p=w/t

hlpe please! Homework Statement a motorboat that develops 50kW covers a distance of 1km in 6min. with how much force did the water resist the motion of the boat? Homework Equations The Attempt at a Solution

super lost! Homework Statement a moving object whose initial kinetic energy is 20 Joules is subject to a frictional force of 4 N that acts in the opposite directon. how far will the object move before coming to a stop. Homework Equations The Attempt at a Solution

Homework Statement how much work is needed to raise a 200-kg load of bricks 10m above the ground to a building under construction? Homework Equations The Attempt at a Solution

so lost! help! Homework Statement The brakes of an 800-kg car exert a force of 4.4kN. (a) how long will the brake take to slow the car to a stop from an initial speed of 34m/s Homework Equations The Attempt at a Solution